Patching attachment for sewing machines



f Aug; 3 1926.

A. OLSEN I PATCHING ATTACHMENT FOR SEWING MACHINES Filed June 8, 1925 2 w 9 W A m Patented Aug. 3, llfiiiiti.

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Application filed June 8, 1925. Serial No. 35,8131.

v The present invention relatesto a patching attachment for sewing machines, and has for its principal ohjecttov providea feediuu: mechanism. whiclris adjustable to chaneje 15 the direction in which it tendsto movethe cloth about the axis of the needle, thus being iiarticularly eiiicient in patching.

Another important object ,ofthednvention is to. provide an. attachment of this nature which, is mounted sothat the seams and other rough places in the cloth will not in terfere with the effectiveness thereof.

still. further very importantobject of the invention to provide an attachment of this nature having an exceedingly simple, strong, and durable structure. and one which is thoroughly eflicient; and reliable in operation, not likely to easily become out of order, and otherwise well adapted to the purpose for which it is designed.

with the above and numerousother objects in view, as will appear as the description proceeds, the invention resides in certain novel features of construction and in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing:

Figure 1 is an elevation of a sewing machine showing my attachment associated therewith, and

Figure 2 is a detail perspective of the attachment.

Referring to the drawing in detail it will be seen that 1 designates the'feed table, 2 the frame of the sewing machine, and 3 the usual needle bar reciprocated vertically in the usual manner. These parts are well known in the art and need no detailed description or illustration in this application. It is desired, however, to point out that the feed table is of a comparative narrow construction so that a sleeve, pants leg. or the like, may be easily and readily slipped thereover.

Referring now particularly to my improvement, it will be seen 4: designates a plate which is fixed to the frame 2 so that the needle bar 3 passes therethrough. A plate 5 is swiveled on the plate 4: and about the axis of the needle bar 3. A. leg 6 depends from the end of the plate 5, and has a lever 7 pivoted thereto at its lower end as at 8. A pair of feed rollers 9 and 10 are fixed on a shaft 11 which is journaled through the end of tne lever 7, said end of the lever being preferably disposed between the two rollers. A lever v12 is pivoted ,on the shaft 11 and has a pawl projection 13 for ene inn; the ratchet teeth 14. formedon the side of the roller 10. A spring; 15 urges the lever toward the roller 10 so as ,tomaintain the pawl proi ecti on 13 in engagement with these teeth 14:. Anarm 16 is loosely, engaged on a bolt 1', and has an intermediate opening; 1.8 through which.. exten ls the needle bar The end of the arm 16,is pivoted to the upper end of a link 20, the lower end of which. is pivoted to the lever 12.. A spring 22 has one end attached. to the arm 16, and the other end att ched to theileg 6, and normally holds the arm 16 downwardly, A spring 235 fixed atone end to,the 6, and the other end to the lever 7 normally urging the rollers 9 and 10 in engagement with the cloth. A cam 24 is pivoted on the leg 6 so that it may be moved downwardly to engage the lever 7, thus swinging thislever to raise the rollers 9 and 10 from engagement with the cloth on the table 1, or from the table.

As the needle bar 3 reciprocates the head portion 25 thereof which is engageable with the needle 26 on its upward stroke will enthe arm 16 and swing the same upwardly. This causes the link 20 to swing the lever 12 thereby causing the rotation of the rollers 9 and 10. A spring pawl 27 is fixed to the lever 7 and engages the teeth 28 on the adjacent side of the roller 9, thus allowing rotation of the rollers in one direction only. By swinging downwardly on the cam 2a, the rollers may be lifted and the whole attachment turned in any direction. It will be evident that this attachment is very useful in the patching of clothes and the like.

It is thought that the construction, operation, and advantages of the invention Will be clearly understood by those skilled in this art .vithout a more detailed description thereof. It is apparent that numerous changes in. the details of construction, and in the combination and arrangementof parts may be resorted to Without departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent is 1. A feed mechanism for a sewing machine; wherein said sewing machine is pro vided with a frame, and a reciprocating needle bar having a head; comprising a plate attached to the frame, an arm loosely mounted on the plate and movable by said head, a depending leg mounted on the plate, a lever pivoted to the leg, a shaft jOllllllIlQti in the end of the lever, a roller on the shaft provided with a series of ratchet teeth, a lever pivot-ed on the shaft and having a pawl projected for engagement with the ratchet teeth, and a link connecting the second mentioned lever with the end of the arm.

2.-A feed mechanism for a sewing machine; wherein said sewing machine is provided with a frame and a reciprocating needle bar having a head; comprising a plate attached to the frame, an arm loos.... mount-ed on the plate and engageahle with the head to he moved thereby, a depending leg mounted on the plate, a lever pivoted to the leg,a shaft journaled in the end of e lever, a roller on the shaft, said roller pro vided with a series of ratchet teeth, a lever pivoted on the shaft and havin a pawl projected for engagement with the ratchet teeth, a link connecting the second mentioned lever with the end of the arm, and means for swinging the first mentioned lever to raise the roller.

3. A feed mechanism of the class described for a sewing machine; wherein said sewing machine is provided with a frame and a reciprocating needle bar having a head; comprising a plate attached to the frame, an arm loosely mounted on the plate and having an opening through which the needle bar extends so that the head may engage the under-surface of said arm for raising the same as the needle bar reciprocates, a depending leg mounted on the plate, a lever pivoted to the leg, a shaft jonrnaled in the end of the lever, a roller on the shaft, said roller provided with a series of. ratchet teeth, a lever pivoted on the shaft and having a pawl projected for engagement with the ratchet teeth, a link connecting the second mentioned lever with the end of the arm, means for swinging the first mentioned lever to raise the roller, and means normally urging the first lever downwardly.

In testimony whereof I afi'ix my signature.

ALBERT OLSlih- 

